The Digium G400 is a higher density four (4) port gateway appliance designed to
connect legacy voice technologies (T1/E1/PRI) to VoIP as well as
transcoding SIP protocols between VoIP devices and/or service providers.

The Digium G800 is a higher density eight (8) port gateway appliance designed to
connect legacy voice technologies (T1/E1/PRI) to VoIP as well as
transcoding SIP protocols between VoIP devices and/or service providers.